从网站请求完全用JavaScript呈现的html源，并找到所有iframe广告代码

您可以使用以下代码块

<iframe>

Selenium

from selenium import webdriverbrowser = webdriver.Firefox(executable_path=r'C:UtilityBrowserDriversgeckodriver.exe')browser.get("https://reddit.com")frames_tag = browser.find_elements_by_tag_name("iframe")frames_xpath = browser.find_elements_by_xpath("//iframe")frames_css = browser.find_elements_by_css_selector("iframe")print("frames detected through iframe tag are %s" %frames_tag)print("frames detected through xpath are %s" %frames_xpath)print("frames detected through css are %s" %frames_css)browser.quit()

我的控制台上的输出是：

frames detected through iframe tag are [<selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ead39d06-0e39-4b40-9425-a86a1fe88d4f")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="1ce10f29-a620-4ce6-90e1-9da563046c70")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ba8493e4-8246-47a0-9ed4-3f51b8c0f133")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="19c0f134-c243-47bd-96d1-6b06ff66a011")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="95d78fa6-fb4f-4b7c-89c5-9b85965f0e4c")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="e6d2d931-1f35-432f-8825-052e244fe798")>]frames detected through xpath are [<selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ead39d06-0e39-4b40-9425-a86a1fe88d4f")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="1ce10f29-a620-4ce6-90e1-9da563046c70")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ba8493e4-8246-47a0-9ed4-3f51b8c0f133")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="19c0f134-c243-47bd-96d1-6b06ff66a011")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="95d78fa6-fb4f-4b7c-89c5-9b85965f0e4c")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="e6d2d931-1f35-432f-8825-052e244fe798")>]frames detected through css are [<selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ead39d06-0e39-4b40-9425-a86a1fe88d4f")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="1ce10f29-a620-4ce6-90e1-9da563046c70")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="ba8493e4-8246-47a0-9ed4-3f51b8c0f133")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="19c0f134-c243-47bd-96d1-6b06ff66a011")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="95d78fa6-fb4f-4b7c-89c5-9b85965f0e4c")>, <selenium.webdriver.firefox.webelement.FirefoxWebElement (session="98594106-54a6-4941-a6ab-cd9d92e9afa2", element="e6d2d931-1f35-432f-8825-052e244fe798")>]